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Answer:
0.25223 seconds.
Explanation:
= Mass of bullet = 0.0146 kg
= Mass of block = 2.55 kg
v = Combined velocity
= Velocity of bullet = 816 m/s
g = Acceleration due to gravity = 9.81 m/s²
As linear momentum is conserved
Now as the block (with the bullet in it) reverses direction and rises,
Equation of motion
The time t is 0.25223 seconds.
C
The temperature must go up if the piston remains stationary.
Explanation:
1
.
The temperature must go up if the piston remains stationary
If the piston remains stationary, we know that
Δ
V
, the change in volume of the system, is necessarily zero, i.e.
Δ
V
=
0
.
This implies that the system does no work on the environment as it does not expand.
Answer:
The velocity is
Explanation:
From the question we are told that
The time taken by the ball is t = 2.5 seconds
The angle made with the horizontal is
Generally the vertical component of the initial velocity is mathematically represented as
Generally at maximum height of the ball the velocity is v = 0 m/s and the time take to reach this maximum height is
=> [This because t is duration for the to a fro travel of the ball]
Generally from kinematic equation
Here given that the direction is against gravity
=>
=>
=>
Downward force = gorce of gravity (her weight)
= 55 x 9.8 = 539 newtons / / / Upward force = 825 newton. / / / Net force = 825 - 539 = 286 newtons upward. / / / F = m a / / / a = f / m = 286 / 55 = 5.2 meters per second squared Upward. / / / Note: We don't know the length of her fall before the bungee kicks in. At the moment we're dealing with, when her acceleration is 5.2 m/s-squared Upward, her velocity can very well be Downward.